correct,leveling has nothing to do with it,nada. The optics are reversed in the design of the lamp assembly. Park your car 10-20-30 ft facing a white wall,garage door,whatever at night and turn on your headlamps and study the upper cutoff pattern- what you should notice is a distinct sharp horizontal line that kicks upward towards the right side {to help light up signs,etc on the RIGHT hand side of the road......in Japan,since traffic flows on the opposite side of the road, this is reversed,with the kickup on the LEFT hand side.Using their lamps here, or our lamps in japan,just places this kickup on the wrong side,the side where opposing traffic flows causing massive glare to other motorists.
BCC93 comment about self leveling and auto controlling is just more BS to confuse others{any self leveling, computer controlled,etc does not change the basic beam pattern set by the design of the optics} so he can continue to fool them and profit by selling more product......he is well aware of their unsuitability for on road use in the USA, he just doesnt care about helping other Q owners make sound choices,making a few bucks for himself is his only motive,period. like I said, an unethical slob.
Here is an example of the usa correct right hand kickup pattern,on jdm it is opposite blinding oncoming traffic
http://www.google.com/imgres?q=headlamp ... 2,s:0,i:79
Here is yet another article explaining the problem...........
ECE/EEC Marking: Headlamp Suitability for Traffic Direction
This is a very important marking. All low ("passing", "lower", "dipped") beams are an asymmetrical distribution of light to give maximum seeing in the direction of travel while controlling glare light directed towards oncoming traffic. A headlamp intended for use in traffic that flows on the right side of the road must never be used on the left side of the road, nor must a left-traffic headlamp ever be used on the right side of the road. A wrong-side-of-road headlamp does not provide adequate illumination for the driver to see what he needs to see in order to drive safely, and severely blinds oncoming traffic. This cannot be corrected by adjusting the aim of the lamp, because traffic-handedness is intrinsic in the optics of the lamp. This means it is very unsafe to use UK-spec, Australian-spec, or Japanese-spec ("JDM") headlamps in the United States, Canada, Continental Europe or any other location that drives on the right side of the road. Many performance parts dealers are illegally importing and selling JDM or wrong-side-of-road ECE headlamps into North America, and touting them as a "performance improvement". They may or may not have ECE headlamp markings, but they are not a performance improvement -- they are a danger.
Note that the terminology involved in traffic-handedness of headlamps can be confusing. Countries where traffic flows along the right side of the road have "Right Hand Traffic" (RHT), and the cars used in these countries generally have the steering wheel on the left side of the car, which is called "Left Hand Drive" (LHD). Countries where traffic flows along the left side of the road have "Left Hand Traffic" (LHT) and mostly "Right Hand Drive" (RHD) cars. Sometimes headlamps are referred to by the position of the steering wheel in the car, e.g. "LHD headlamps" used to indicate lamps suitable for use in an LHD vehicle, i.e., on the right side of the road. This is not a wise habit; most countries permit vehicles with the steering wheel on the "wrong" side of the car, but the headlamps are still required to be of the correct traffic-handedness.